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<p>Reports mismatched parameters in a docstring. For example, <code>b</code> is highlighted, because there is no
  such a parameter in the <code>add</code> function.</p>
<pre><code>
    def add(a, c):
    """
    @param a:
    @param b:
    @return:
    """
    pass
</code></pre>
<p>The inspection does not warn you of missing parameters if none of them is mentioned in a docstring:</p>
<pre><code>
def mult(a, c):
    """
    @return:
    """
    pass
</code></pre>
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